# SolarViewer vs ZonergyPro

The clearest difference is iOS requirement: SolarViewer at 8.0 against ZonergyPro's 12.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SolarViewer ships an update every 5 weeks, ZonergyPro every 3 weeks. The most recent releases landed on September 6, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | SolarViewer | ZonergyPro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Size | 36 MB | 55 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [AsianPowerDevicesInc](https://appshunter.io/developer/1214788661) | [DELTA NETWORKS (XIAMEN) LTD](https://appshunter.io/developer/1033104954) |

## What reviewers say

### SolarViewer

[App page](https://appshunter.io/ios/app/solarviewer/id1462404751)

**Features:** macOS Compatibility

**In-app purchases:** none


### ZonergyPro

[App page](https://appshunter.io/ios/app/zonergypro/id1638251713)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SolarViewer free?

SolarViewer is free to download, with no in-app purchases.

### Is ZonergyPro free?

ZonergyPro is free to download, with no in-app purchases.

### Do SolarViewer or ZonergyPro have ads?

Neither SolarViewer nor ZonergyPro shows ads.

### Which is updated more often, SolarViewer or ZonergyPro?

SolarViewer ships an update every 5 weeks, and ZonergyPro every 3 weeks. Most recently, SolarViewer was updated on September 6, 2026 and ZonergyPro on September 18, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*